The Harry Potter star passed away while hiking in Death Valley National Park in California.

His body was found in a remote area by a pair of hikers on Sunday, and local police believe he may have died from heat related issues, according to TMZ.com.

Legeno began his career as a boxer and mixed martial arts fighter under the name Lone Wolf.

He landed his first movie role in 2000′s “Snatch” and went on to appear in “Batman Begins.” He also featured as werewolf Fenrir Greyback in “Harry Potter and the Half-Blood Prince” and “Harry Potter and the Deathly Hallows: Parts 1 and 2.”